3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(round(1.700000000000556, 12, PHP_ROUND_HALF_DOWN));
Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
float(1.700000000001)
preferences:
66.53 ms | 406 KiB | 5 Q